Photocatalytic Properties of Commercially Available TiO2: Study of Fotosan® and InterBrasil® FA-101 for H2S Degradation Using UV and Solar Radiation

摘要: This paper proposes the study and comparison of two commercial photocatalysts TiO2 when applied as coating on a fibrocement roof tile. Are reported their respective photocatalytic activities, chemical, morphological, textural characteristics. For that, InterBrasil® FA-101 Fotosan® were deposited support to perform activity tests characterization analyses. The measurement each sample was carried out through efficiency H2S degradation, using artificial (UV lamp) natural (solar lighting) radiation. surfaces formed with this photocatalyst characterized by scanning electron microscopy, energy-dispersive X-ray spectroscopy (SEM-EDX), diffraction (XRD), nitrogen adsorption-desorption isotherms, diffuse reflectance (DRS), Fourier infrared transformation attenuated total reflection (ATR-FTIR). volumetric flow rate saturation time (deactivation) evaluated operational performance parameters degradation reaction. shows that in coatings correspond anatase phase. In addition, pore volume from 4.9 9.0 × 10−3 g cm−3 superficial area 19.6 30.5 m2 g−1 is considered relatively high. results showed unlike Fotosan®, type radiation used had greater influence FA-101, since there reduction solar used. 80% obtained for residence (RT) 115 s whereas reached 45% same RT. Lower observed after 30 min 390 min reaction respectively. containing most effective FA-101.